Chapter 6. Principles of Modularity

Modularity is one of those “tried and true” concepts in network design that very few people ever think about. Networks are modularized, well, because it has always been done that way. Everyone knows that too big is bad, right? But how big is too big?

The biggest problem with answering this question is that not only is it dependent on what you’re trying to do, but also on what materials you’re working with and what year you live in.

What year you live in? Suppose you went back to the turn of the 12th century and asked, “How big of a house do I need?” Given the materials they had to work with, the expense of the labor required to build and manage a large physical space, and the need to fit large numbers of people ...

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